11-letter words containing p, o, i, r
- retinispora — any member of the genus Retinispora, of conifers which grow in the east of Asia and in the east and west of North America
- retinopathy — any diseased condition of the retina, especially one that is noninflammatory.
- retinoscope — an apparatus that determines the refractive power of the eye by observing the lights and shadows on the pupil when a mirror illumines the retina; skiascope.
- retinoscopy — an objective method of determining the refractive error of an eye.
- retrophilia — a strong liking for things from the past
- review copy — a copy of a book sent by a publisher to a journal, newspaper, etc, to enable it to be reviewed
- rh positive — See under Rh factor.
- rh-positive — See under Rh factor.
- rhapsodical — extravagantly enthusiastic; ecstatic.
- rheotropism — the effect of a current of water upon the direction of plant growth.
- rhinoplasty — plastic surgery of the nose.
- rhizosphere — the area of soil that surrounds the roots of a plant and is altered by the plant's root growth, nutrients, respiration, etc.
- ribbon copy — the original copy of a number of typewritten copies (distinguished from carbon copy).
- riding crop — crop (def 7).
- ring-porous — having annual rings marked by a conspicuous band of large pores in wood formed in spring.
- riot police — police armed against public disorder
- rip-roaring — boisterously wild and exciting; riotous: Have a rip-roaring good time.
- robespierre — Maximilien François Marie Isidore de [mak-see-mee-lyan frahn-swa ma-ree ee-zee-dawr duh] /mak si miˈlyɛ̃ frɑ̃ˈswa maˈri i ziˈdɔr də/ (Show IPA), 1758–94, French lawyer and revolutionary leader.
- robot pilot — automatic pilot.
- rock pigeon — rock dove.
- rocket ship — a rocket-propelled aircraft or spacecraft.
- rolling pin — a cylinder of wood or other material, usually with a short handle at each end, for rolling out dough.
- rompishness — the state or condition of being rompish
- rope stitch — (in embroidery) a stitch formed from the entwining of stitches.
- ropedancing — the act of dancing on a rope
- rumgumption — good sense
- russophobia — an intense and often irrational hatred for Russia, or esp the former Soviet Union, its political system, etc
- safe period — an interval of the menstrual cycle when fertilization is considered to be least likely, usually a number of days prior and subsequent to the onset of menstruation.
- saprobiotic — saprobic
- saprolegnia — a variety of fungus
- sapropelite — a foul-smelling mud
- saprophytic — any organism that lives on dead organic matter, as certain fungi and bacteria.
- sauropsidan — relating to the Sauropsida or animals belonging to the Sauriodea group in Huxley's classification
- scalpriform — chisel-shaped, as the incisors of certain rodents.
- scapigerous — having a scape or leafless stalk
- scholarship — learning; knowledge acquired by study; the academic attainments of a scholar.
- school trip — educational outing
- scorpaenoid — resembling or related to the family Scorpaenidae.
- scorpionfly — any of several harmless insects of the order Mecoptera, the male of certain species having a reproductive structure that resembles the sting of a scorpion.
- scripholder — a person who owns a scrip or scrips
- scripophile — a person who practices scripophily.
- scripophily — the collecting by hobbyists of old stock certificates and bonds that have no intrinsic value other than their aesthetic appeal or relative rarity.
- scriptorial — of or relating to a scriptorium
- scriptorium — a room, as in a monastery, library, or other institution, where manuscripts are stored, read, or copied.
- scrumptious — very pleasing, especially to the senses; delectable; splendid: a scrumptious casserole; a scrumptious satin gown.
- seismograph — any of various instruments for measuring and recording the vibrations of earthquakes.
- self-profit — Often, profits. pecuniary gain resulting from the employment of capital in any transaction. Compare gross profit, net profit. the ratio of such pecuniary gain to the amount of capital invested. returns, proceeds, or revenue, as from property or investments.
- semipopular — relatively popular; quite popular
- senatorship — the office or position of a senator
- senior prom — a formal dance or gathering of high school students held at the end of the senior year